Question

What is the unknown number of n/7= 5/(7/9) ?

Answer 1

the unknown numer is n=45

Answer 2

For this case we must find the value of "n" of the following expression:

`\frac {n} {7} = \frac {5} {\frac {7} {9}}`

Applying double C on the right side:

`\frac {n} {7} = \frac {9 * 5} {7 * 1}\\\frac {n} {7} = \frac {45} {7}`

We multiply by 7 on both sides of the equation:

`n = 7 * \frac {45} {7}\\n = 45`

Thus, the value of n is 45.

ANswer:

`n = 45`